Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS North Platte, NE

May 23, 2021Chase County, Keith County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 23, 2021, 6:57 PM MDT for Chase County, Keith County, Perkins County, Nebraska. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 23, 2021, 6:57 PM MDT (00:57 UTC)
Expired
May 23, 2021, 8:00 PM MDT
In force
63 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Chase County, NE, Keith County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 160 km from the middle of the area, began a volume at 00:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 23, 7:25 PM MDTHAIL 14 Ene Venango, NEALSO HIGH WINDS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 23, 12:06 PM MDTTornado WatchSPC8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.0 hours before the alert went out and 106 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2021-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 930 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 161 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
930 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1216 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
161 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.5
Supercell composite
7.0

Open this sounding in Storm Lab

The text

As transmitted.

802 
WUUS53 KLBF 240057
SVRLBF
NEC029-101-135-240200-
/O.NEW.KLBF.SV.W.0025.210524T0057Z-210524T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
657 PM MDT Sun May 23 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Central Perkins County in southwestern Nebraska...
  Central Keith County in southwestern Nebraska...
  Northwestern Chase County in southwestern Nebraska...

* Until 800 PM MDT.

* At 656 PM MDT, severe thunderstorms were located along a line
  extending from 8 miles northeast of Lemoyne to near Lamar, moving
  northeast at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Ogallala, Grant, Madrid, Lamar, Keystone, Roscoe, Kingsley Dam,
  Chase, Brandon, Nevens, Broganville, Big Bald Hill and Wild Horse
  Spring.

This includes the following highways...
 Highway 61 between mile markers 51 and 109.
 Highway 92 between mile markers 134 and 138.
 Interstate 80 in Nebraska between mile markers 119 and 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 800 PM MDT for southwestern
Nebraska.

LAT...LON 4065 10205 4139 10174 4139 10128 4058 10166
      4043 10205
TIME...MOT...LOC 0056Z 214DEG 61KT 4135 10165 4055 10205 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC
2 follow-up statements
886 
WWUS53 KLBF 240131
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
731 PM MDT Sun May 23 2021

NEC029-101-135-240200-
/O.CON.KLBF.SV.W.0025.000000T0000Z-210524T0200Z/
Perkins NE-Keith NE-Chase NE-
731 PM MDT Sun May 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MDT
FOR CENTRAL PERKINS...CENTRAL KEITH AND NORTHWESTERN CHASE
COUNTIES...

At 731 PM MDT, severe thunderstorms were located along a line
extending from 8 miles east of Keystone to near Lamar, moving
northeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Ogallala, Grant, Madrid, Lamar, Keystone, Roscoe, Kingsley Dam,
Chase, Brandon, Nevens, Broganville, Big Bald Hill and Wild Horse
Spring.

This includes the following highways...
 Highway 61 between mile markers 51 and 99.
 Interstate 80 in Nebraska between mile markers 123 and 142.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4065 10205 4139 10162 4139 10128 4058 10166
      4043 10205
TIME...MOT...LOC 0131Z 217DEG 54KT 4125 10143 4061 10194 

HAIL...1.00IN
WIND...60MPH
 
$$

CDC
502 
WWUS53 KLBF 240159
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
759 PM MDT Sun May 23 2021

NEC029-101-135-240209-
/O.EXP.KLBF.SV.W.0025.000000T0000Z-210524T0200Z/
Perkins NE-Keith NE-Chase NE-
759 PM MDT Sun May 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PERKINS...CENTRAL
KEITH AND NORTHWESTERN CHASE COUNTIES WILL EXPIRE AT 800 PM MDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.

A Tornado Watch remains in effect until 800 PM MDT for southwestern
Nebraska.

A Severe Thunderstorm Watch remains in effect until midnight MDT for
southwestern Nebraska.

LAT...LON 4065 10205 4139 10162 4139 10128 4058 10166
      4043 10205
TIME...MOT...LOC 0159Z 214DEG 61KT 4163 10108 4099 10160 

$$

CDC

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 6:00 PM MDTSevere Thunderstorm WarningLBFArthur, Garden, Grant, Keith45 min
May 23, 6:04 PM MDTSpecial Weather StatementLBFSheridan41 min
May 23, 6:18 PM MDTSevere Thunderstorm WarningLBFDeuel, Keith, Perkins42 min
May 23, 6:26 PM MDTSevere Thunderstorm WarningLBFCherry, Grant, Sheridan49 min
May 23, 6:39 PM MDTSevere Thunderstorm WarningLBFArthur, Cherry, Grant, Hooker, McPherson51 min
May 23, 6:59 PM MDTSevere Thunderstorm WarningLBFCherry46 min
May 23, 7:24 PM MDTSpecial Weather StatementLBFHooker51 min
May 23, 7:28 PM MDTAreal Flood WarningLBFKeith, Perkins3 hr
May 23, 7:30 PM MDTSpecial Weather StatementLBFMcPherson45 min
May 23, 7:47 PM MDTSpecial Weather StatementLBFCherry43 min
May 23, 7:54 PM MDTSpecial Weather StatementLBFThomas51 min
May 23, 7:59 PM MDTSpecial Weather StatementLBFPerkins46 min
May 23, 8:11 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha49 min
May 23, 8:14 PM MDTSpecial Weather StatementLBFLogan46 min
May 23, 8:17 PM MDTSevere Thunderstorm WarningLBFChase, Hayes, Perkins43 min
May 23, 8:29 PM MDTSpecial Weather StatementLBFBlaine, Logan46 min
May 23, 8:36 PM MDTFlash Flood WarningLBFKeith, Perkins3 hr
May 23, 8:39 PM MDTSpecial Weather StatementLBFLincoln51 min
May 23, 8:56 PM MDTSpecial Weather StatementLBFHayes34 min
May 23, 9:02 PM MDTSpecial Weather StatementLBFBrown, Keya Paha, Rock43 min
May 23, 9:14 PM MDTSpecial Weather StatementLBFBlaine, Logan, Loup46 min
May 23, 9:19 PM MDTSpecial Weather StatementLBFFrontier41 min
May 23, 9:30 PM MDTSevere Thunderstorm WarningLBFFrontier, Lincoln45 min
May 23, 9:33 PM MDTSpecial Weather StatementLBFLincoln42 min
May 23, 9:43 PM MDTSpecial Weather StatementLBFBrown, Keya Paha, Rock47 min
May 23, 9:50 PM MDTSpecial Weather StatementLBFBlaine, Loup40 min
May 23, 10:14 PM MDTSpecial Weather StatementLBFCuster, Frontier46 min
May 23, 10:36 PM MDTSpecial Weather StatementLBFGarfield, Loup39 min
May 23, 10:59 PM MDTSpecial Weather StatementLBFDawson31 min
May 23, 11:13 PM MDTSpecial Weather StatementLBFGarfield, Wheeler47 min
May 24, 5:18 PM MDTSpecial Weather StatementLBFFrontier42 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.